Whether the signal lives on an algebraic variety — a surface defined by polynomial equations.
Delay-embeds the signal and tests whether the resulting point cloud lies near the zero set of a low-degree polynomial. In algebraic geometry, the Zariski topology's closed sets are exactly these zero sets, making the topology non-Hausdorff (most pairs of points can't be separated by open sets). This geometry also measures the signal's pattern lattice: does it obey Boolean logic (classical), or does it deviate toward a Heyting algebra (intuitionistic)?
How far is the signal's pattern lattice from Boolean? 1.0 means maximally non-Boolean: the law of excluded middle fails for many pattern pairs. Forest fire scores 1.0 — its intermittent dynamics create pattern relationships that violate classical logic (a pattern can be "neither always present nor always absent" in a meaningful sense). Logistic period-3 (0.90) and period-5 (0.78) are high too: their windows of periodicity within chaos create ambiguous pattern membership. Logistic full chaos and Rössler score 0.0 — fully chaotic systems are "Boolean" because every pattern either appears or doesn't, with no intermediate states.
What fraction of point pairs are non-separable in the Zariski topology? Collatz gap lengths score 0.9995 (almost all pairs are non-separable — the data lies almost exactly on an algebraic variety). Rainfall scores 0.96 (its exponential-like distribution creates a low-dimensional algebraic structure). Wichmann-Hill (0.007) is nearly zero — good PRNGs fill delay space uniformly, avoiding any algebraic surface.
How well does a low-degree polynomial fit the delay-embedded cloud? Dice rolls (0.064) have the highest residual — the data is maximally far from any algebraic variety. Constants score 0.0 (trivially on a variety: the point {(c,c,c,...)}). This is the "anti-algebraic" metric: high values mean the signal has no polynomial recurrence relation.
| Source | Domain | Value |
|---|---|---|
| Dice Rolls | exotic | 0.0639 |
| macOS Mach-O (dyld) | binary | 0.0616 |
| Beta Noise | noise | 0.0585 |
| ··· | ||
| Constant 0xFF | noise | 0.0000 |
| Constant 0x00 | noise | 0.0000 |
| Collatz Parity | number_theory | 0.0000 |
| Source | Domain | Value |
|---|---|---|
| Forest Fire | exotic | 1.0000 |
| Logistic r=3.83 (Period-3 Window) | chaos | 0.9048 |
| Logistic r=3.74 (Period-5 Window) | chaos | 0.7762 |
| ··· | ||
| Logistic Chaos | chaos | 0.0000 |
| Rossler Attractor | chaos | 0.0000 |
| Prime Gaps | number_theory | 0.0000 |
| Source | Domain | Value |
|---|---|---|
| Collatz Gap Lengths | number_theory | 0.9995 |
| Rainfall (ORD Hourly) | climate | 0.9612 |
| Forest Fire | exotic | 0.8774 |
| ··· | ||
| Constant 0xFF | noise | 0.0000 |
| Constant 0x00 | noise | 0.0000 |
| Wichmann-Hill | binary | 0.0066 |
| Source | Domain | Value |
|---|---|---|
| Constant 0xFF | noise | 0.0000 |
| Constant 0x00 | noise | 0.0000 |
| Logistic r=3.2 (Period-2) | chaos | -0.0528 |
| ··· | ||
| Sawtooth Wave | waveform | -5.2147 |
| L-System (Dragon Curve) | exotic | -4.3959 |
| Symbolic Lorenz | exotic | -4.3932 |
Zariski's heyting_gap (CV=1.76) is the framework's most variable metric across sources. It detects a specific structural property — intermittency — that other geometries approximate but don't directly measure. The forest fire / logistic period-3 cluster at the top of the heyting_gap ranking corresponds to "intermittent chaos": systems that switch between qualitatively different dynamical regimes. In investigations, heyting_gap discriminated between normal and abnormal ECG with moderate effect size, because cardiac arrhythmias are fundamentally intermittent.